Space heater



May-20, 1941. s, 3050 2,242,742

SPACE HEATER Filed Nov. 22, 1939 2 Sheets-Sheet 1 Fiji I 5 INVENTOR STe hen NBobo May 20, 1941.

s. N. 8080 2 I 2,242,742

SPACE HEATER Filed Nov. 22, 1939' 2 Sheets-Sheet 2 INVENTOR Tephen B0 0 HIS NEY Patented May 20, 1941 SPACE HEAT-ER Stephen N. Bobo, New York, N. in, assignor .to Robert P-Sllififill, New York, N. 1'.

Application November 22, 1939, Serial No. 305,602

5 Claims.

My present invention relates to heating app ratus, and more particularly to an improved radiant heater of the reflector type.

In carrying out my invention I preferably employ a stand having the reflecting portion in the form of an upright substantially cone-shaped member, the reflecting surface being "in the form of a cylindrical member generated by, the revolution of a parabolic curve about an axis of rotation. While the reflecting surface isparabolic in form, it is not necessarily cylindricaLas obviously within the scope of my invention I may make up the reflecting surface ,of ,a-plurality of separate, independent, parabolically shaped faces. The reflecting surface being in the form substantially that of .a cone, '1 position at ,the apex, or the portion adjacent to ,the ,apex of such cone, a heating element comprising a plurality of glow points arranged on the lower surf-ace of a heat reflector of preferably ceramic or other ,heat ,resisting material which directs theheat produced by a burner, of gaseous material downwardly onto the parabolic reflecting surface. The entire apparatus is portable in nature and ,may be'moved from place to place in any enclosure desired, such as a room, hall or the like.

The principal object of my invention therefore is an improved radian-t heater of the reflector type.

A feature ofmyinvention is an-improved heater having a parabolic surface "in combination with a reflecting heating element which reflects heat downwardly onto the parabolic surface.

Another feature of my invention isan improved radiant heater-in which heat is radiatedparallel to the support-fori'the heater.

A still further feature of my invention is an improved radiant heater of thereflector type in which the major portion of the heat generated is reflected outward at right angles to the axis of the heater and a portion of the heat generated passes upwardly from the burner of the device.

Other novel features of "the invention will appear as the description thereof progresses.

In the accompanying drawings:

Figlisa vertical sectional elevation of a heater embodying myjinvention.

Fig. 2 is a sectional planyiew onthe line 22 looking in the direction of the arrows, and

Fig. .3 is a sectional plan view taken on the line '3.3 of Fig. 1 and looking in the direction of the arrows.

Referring to the drawings, ,l't designates a heat reflecting element. generally of frustro-conical form, and the curvature of which is parabolic. Secured to, though preferably formed integral therewith, is'adependingskirt portion M. The upper smaller diameter end of the reflector 1 0 is recessedat l2 to provide a supporting seat or shelf for a burner it. Such burner :13 is :pr'efera-bly one adapted toburn-gaseous fuel and-is circular in plan view as shown in Figure-2.

The skirt 1 I and reflector it are preferably formed integral with each other and are of sheet metal and stamped or spun to theshape required. The lower end of the de'pendingskirt portion H is open, as shown, and is provided at various points about its --periphery with projections M having feet 1-5 attached thereto and by means of which theelements l0 and H are raised above the support-on which the feet 15 rest. i

The burner -l-3 is provided with aplurality of radially extending perforations it through which the gaseous fuel flows under the usual pressure and thus directs the flame horizontallyovera designated area. The lower end of the burner 13 is machined to receive the upperopen end 11 of --a gas tuy-ere t8, a -felt or other compressible washer 19 being utilized to insurea gas-tight joint between the burner 13 and tuyre l8.

The lower end of the tuyere I8 is .provided with a mixing chamber .20 and the end .of'rthe chamber 2%] is provided --.with .a rating 2!. R0-

- tatably mounted on the lowerend of the mixing chamber 20 is a perforated member: 22 which cooperates with the openings inpthe gratingizl to regulate the flowof air .to the mixing .cham ber .20. The grating iZ'l isperforatedvto receive thedelivery end 23 of .a gas .feed ,pipe :Z4,;i'1her311 Ijustment of the end 23 of the gas feed. pipe M with respect 'to the mixing chamber 213, being controlled by the nut 25. The gas fee d-pipe-.;24 is connected through pipe 28 and valvev 2;! to a suitable source of fuel supply.

Extending upwardly and about the periphery of the reflector element I 6 arespaced standards or supports 28. The lower ends of these supports extend downwardly through the reflectingelement l0 .and terminate at the brackets .14 as shown inTEig.; the uppehcnds 10f the-standards 28 issecured awcylindrical member=29. The

cylindrical member 29 is :secured to the-standards 28 in any desired way as byrivetinghsoldermg, i spot weldingor the like and the cylindrical member 29 is positioned so as to enclosetheauppi end of the :reflectingelement Ill and. the-{burner i3 as-clearlyshown in Fig. :1. Withinthenylindrical member :29 is arranged .a .shelf or ,ledge which forms a support for a ceramic glow element 3|.

This glow element 31 is made up of a plurality of sections 32, preferably of ceramic material, or other suitable non-combustible material. The sections 32 have a depending skirt portion 33 which rests on the shelf or ledge 30 and maintains the body portion 34 slightly above the upper end of the burner l3. The under face of the body portion 34 is provided with a plurality of spaced downwardly extending glow points 35, and the body portion 34 between such points 35 is provided with a plurality of perforations 36. The sections 32 when in assembled position define a centrally located passageway 31 through which air may flow to serve as means to maintain the burner l3 in relatively cool condition.

Fitting over the upper peripheral edge of the cylindrical member 29 is a dome shaped cover 38 which is provided with an inwardly projecting ledge 39 which engages the topmost edge of the cylindrical member 29. The dome 33 is provided with an opening 40 at the top, and into such opening fits a removable cover 4|, such covering being provided with a handle 42 and by means of which the cover may be placed in or removed from the opening 40 in the dome 38.

When the valve 21 is rotated to permit flow of gaseous fuel through the pipes 26 and 24 into the tuyere l8 and into the burner l3, the same may be ignited in the usual manner and the flame from the burning gas is ejected horizontally and into engagement with the glow points 35. The heated points radiate or throw the heat downwardly into engagement with the reflector l0, and such heat will be reflected or radiated outwardly from the reflector II! in a horizontal direction. By removing the cover 5| there will be a considerable amount of heat passed upwardly through the opening 40 without detracting appreciably from the amount of heat delivered to the reflector The device is portable and may be carried to any desired place in a room or apartment, and is economical in that every bit of heat generated is rapidly thrown out and thrown out in a direction to produce the best results. The reflecting element [0 is preferably cylindrical in cross section as shown in Figure 3 for example but obviously this is a matter of design only, and I may make the reflecting element of a plurality of sectors to thereby produce a multi-sided reflector, but one which in the main is substantially of frustro-conical form as shown in Figure 1. I bethe apex of the heat reflecting element, a shelf formed of the material of the heat reflecting element and about the periphery of the opening therein, a gaseous fuel burner mounted on such shelf, means for supplying gaseous fuel to the burner, said biuner constructed to eject gaseous fuel radially outward from the burner, a heat radiating member of non-combustible material mounted about the burner and provided with a plurality of downwardly extending glow points, said non-combustible element directing heat from the glow points downwardly onto the parabolic heat reflecting surface.

2. In an improved heating apparatus, the combination of a heat reflecting element of substantially frustro-conical form and having its surface generated by the revolution of a parabola about an axis of rotation, an opening formed in the apex of the heat reflecting element, a shelf formed of the material of the heat reflecting element and about the periphery of the opening therein, a gaseous fuel burner mounted on such shelf, means for supplying gaseous fuel to the burner, said burner constructed to eject gaseous fuel radially outward from the burner, a heat radiating member of non-combustible material mounted above the burner and provided with a plurality of downwardly extending glow points, said non-combustible element directing heat from the glow points downwardly onto the parabolic heat reflecting surface, and a plurality of perforations formed in the non-combustible element to permit escape of heated air and gases upwardly through the element.

3. In an improved heating apparatus, the combination of a heat reflecting element of substantially frustro-conical form having its surface generated by the revolution of a parabola about an axis of rotation, .an opening formed in the apex of the heat reflecting element, a shelf formed of the material of the heat reflecting element and about the periphery of the opening therein, a gaseous fuel burner mounted on such shelf, means for supplying gaseous fuel to the burner, said burner constructed to eject gaseous fuel radially outward from the burner, a heat radiating member of non-combustible material mounted about the burner and provided with a plurality of downwardly extending glow points, said non-combustible element directing heat from the glow points downwardly onto the parabolic heat reflecting surface, a plurality of perforations formed in the non-combustible element to permit escape of heated air and gases upwardly through the element, and a centrally arranged perforation in the non-combustible element for permitting circulation of air through the element and maintaining the burner at a relatively low temperature.

4. In an improved heating apparatus, the combination of a heat reflecting element of substantially frustro-conical form and having its surface generated by the revolution of a parabola about an axis of rotation, an opening formed in the apex of the heat reflecting element, a shelf formed of the material of the heat reflecting element and about the periphery of the opening therein, a gaseous fuel burner mounted on such shelf, means for supplying gaseous fuel to the burner, said burner constructed to eject gaseous fuel radially outward from the burner, a heat radiating member of non-combustible material mounted above the burner and provided with a plurality of downwardly extending glow points, said non-combustible element directing heat from the glow points downwardly onto the parabolic heat reflecting surface, and a removable hood cover for enclosing the non-combustible heat reflecting element.

5. In an improved heating apparatus, the combination of a heat reflecting element of substantially frustro-conical form and having its surface generated by the revolution of a parabola about an axis of rotation, an opening formed in the apex of the heat reflecting element, a shelf formed of the material of the heat reflecting element and about the periphery of the opening therein, a gaseous fuel burner mounted on such shelf, means for supplying gaseous fuel to the burner, said burner constructed to eject gaseous fuel radially outward from the burner, a heat 10 radiating member of non-combustible material mounted above the burner and provided with a plurality of downwardly extending glow points, said non-combustible element directing heat from the glow points downwardly onto the parabolic heat reflecting surface, a removable hood cover for enclosing the non-combustible heat reflecting element, and a removable cover in said member.

STEPHEN N. BOBO. 

